JP7151321B2 - lighting equipment - Google Patents

Description

Embodiments of the present invention relate to lighting devices such as downlights mounted on the ceiling of a building, for example.

2. Description of the Related Art Conventionally, a downlight embedded in a mounting hole provided in a ceiling is known as a lighting device mounted on the ceiling of a building. A downlight has a decorative frame fixed to a mounting hole, and a lighting body that has a light source and is arranged in the ceiling space.

As an example of a downlight, there is known a universal downlight in which a lighting body is rotatably and tiltably supported with respect to a decorative frame (ceiling). A universal downlight can incline the emission direction of illumination light in a desired direction, and can illuminate a wall or the like.

JP 2018-78004 A

A downlight normally emits illumination light vertically downward from the ceiling to the floor. On the other hand, the universal downlight can change the orientation of the lighting body with respect to the decorative frame to incline the emission direction of the illumination light. In other words, conventionally, fixed downlights with fixed orientations and universal downlights are selectively used depending on the purpose of use.

Thus, conventionally, it was necessary to separately prepare a general fixed downlight and a universal downlight, which increased the manufacturing cost and management cost of the device.

Therefore, it is desired to develop a lighting device that can fix and release the orientation of the lamp with a simple and inexpensive structure.

A lighting device according to an embodiment includes a fixed member fixed to a mounting portion, a rotating member provided to be rotatable about a rotating shaft with respect to the fixed member, and a light source emitting light in an optical axis direction. and the lamp can be tilted with respect to the rotating member between a first position where the optical axis is parallel to the rotating shaft and a second position where the optical axis is tilted with respect to the rotating shaft. and a support mechanism supported by the fixed member, and fixed to the fixed member in a first state in which the rotary member is brought into contact with a part of the fixed member when the rotary member is not allowed to rotate with respect to the fixed member. and a rotation control member that is fixed to the fixing member in a second state different from the first state when allowing rotation with respect to. In the first state, the rotation control member is fixed to the fixing member on the side where a gap between the rotation control member and the rotation member opens when the lamp is tilted from the first position to the second position. In the state 2, when the lamp body is tilted, it is fixed to the fixing member on the side where the gap between it and the rotating member is narrowed.

According to the embodiment, it is possible to provide a lighting device that can fix and release the orientation of the lamp with a simple and inexpensive configuration.

FIG. 1 is a perspective view showing a lighting device according to an embodiment. FIG. 2 is an exploded perspective view showing a frame of the lighting device of FIG. 1. FIG. 3 is a perspective view showing a main part of the frame of FIG. 2. FIG. 4 is an exploded perspective view showing a lamp body of the lighting device of FIG. 1. FIG. FIG. 5 is a schematic diagram of a main part showing a state in which the lamp body of the lighting device of FIG. 1 is tilted with respect to the frame body. FIG. 6 is a schematic diagram of a main part showing a state in which the lamp body of the lighting device of FIG. 1 is arranged coaxially with the frame body.

The lighting device 100 includes a decorative frame 22 fixed to the ceiling of a building, a rotary frame 24 provided to be rotatable about a rotary axis P with respect to the decorative frame 22, and light in a direction along an optical axis O. , a first position where the optical axis O is parallel to the rotation axis P, and a second position where the optical axis O is inclined with respect to the rotation axis P (Fig. 1 ), two supporting plates 60 that support the lamp body 40 so as to be tiltable about the tilting axis Q with respect to the rotating frame 24, and a part of the rotating frame 24 that contacts and rotates. The decorative frame 22 is in a first state in which the movable frame 24 cannot be rotated with respect to the decorative frame 22, or in a second state (state shown in FIG. 1) in which the rotation frame 24 is permitted to be rotated with respect to the decorative frame 22. and a plate piece 80 fixed to the .

Hereinafter, embodiments will be described in detail with reference to the drawings.
As shown in FIG. 1, the illumination device 100 according to the embodiment includes a frame body 20, a lamp body 40, two support plates 60, 60 (support mechanism), and an L-shaped plate piece 80 (rotating mechanism). control member, anti-movement member). The illumination device 100 also has a power supply device (not shown) connected to a light source module 30 (FIG. 3) of the lighting body 40, which will be described later. The lighting device 100 of the present embodiment is, for example, a universal downlight that can be attached to an attachment hole (not shown) provided in the ceiling (mounted portion) of a building. The illumination device 100 of this embodiment can also be used as a fixed downlight in which the optical axis O of the lamp body 40 is parallel to the rotation axis P by replacing the plate piece 80 .

In the following description, the central axis perpendicular to the light emitting surface 31 of the light emitted from the light emitting portion 32 (light source) of the light source module 30 is referred to as an optical axis O, and the vertical direction passes through the center of the frame 20 fixed to the ceiling. The extended axis is called a rotation axis P. As shown in FIG. In the illumination device 100 of this embodiment, the frame 20 is fixed to the ceiling, and the lamp 40 is tiltably supported with respect to the frame 20 via the support plates 60, 60 about the tilt axis Q. is doing. Therefore, the optical axis O of the lamp body 40 can be tilted with respect to the rotation axis P passing through the center of the frame body 20 . FIG. 1 shows a state in which the lamp body 40 is arranged at a second position tilted with respect to the frame body 20 .

As shown in FIG. 2, the frame body 20 is attached to a substantially cylindrical decorative frame 22 (fixing member) fixed to an attachment hole in the ceiling, and to the decorative frame 22 so as to be rotatable about a rotation axis P. It has a substantially cylindrical rotating frame 24 (rotating member). The rotating frame 24 is arranged so as to overlap the upper end of the decoration frame 22 (FIG. 1). The decorative frame 22 and the rotary frame 24 are coaxially attached along the rotary axis P. As shown in FIG. The decorative frame 22 and the rotating frame 24 have outer diameters slightly smaller than the mounting holes in the ceiling.

The decorative frame 22 has, at one end in the axial direction, an annular flange portion 22a that engages with the ceiling surface (floor side surface). The diameter of the flange portion 22a is larger than the diameter of the mounting hole in the ceiling. The decorative frame 22 also has three fixing springs 21 for fixing the decorative frame 22 to the ceiling. The decorative frame 22 is fixed to the ceiling by sandwiching the wall of the ceiling between the three fixing springs 21 and the flange portion 22a. Therefore, the rotating frame 24 and the three fixing springs 21 are arranged in the ceiling space.

The three fixing springs 21 are fastened and fixed to the outer peripheral surface of the decorative frame 22 by screws 23 (only one is shown in FIG. 2). The decorative frame 22 has three screw holes into which the screws 23 are screwed. Each screw hole is provided through the wall of the cylindrical portion of the decorative frame 22 . Each fixed spring 21 includes a fixed portion 21a extending in a tangential direction with respect to the outer peripheral surface of the decorative frame 22, and a spring radially extending integrally in the radial direction of the decorative frame 22 from the tip side of the fixed portion 21a. and a portion 21b. The three fixing springs 21 are attached at regular intervals in the circumferential direction of the decorative frame 22 with the fixing portions 21a facing in the same direction.

The fixing spring 21 is deformable in a direction in which the fixing portion 21a approaches the outer peripheral surface of the decorative frame 22, and in a direction in which the spring portion 21b approaches a lamp body 40, which will be described later. Therefore, the three fixing springs 21 can be inserted through mounting holes slightly larger in diameter than the decorative frame 22 . Since the method of attaching the decorative frame 22 using these three fixing springs 21 is a well-known technique, the explanation thereof will be omitted.

The three fixing springs 21 are fastened and fixed to the decorative frame 22 using screws 23 as described above. On the other hand, the rotating frame 24 has a cylindrical portion 25 that is inserted and arranged inside the upper end of the decorative frame 22 . The outer diameter of the cylindrical portion 25 is smaller than the inner diameter of the decorative frame 22 . An annular groove 25 a facing the inner surface of the decorative frame 22 is provided on the outer peripheral surface of the cylindrical portion 25 . This annular groove 25a has a width and a depth that allow the tips of the screws 23 for fastening and fixing the three fixing springs 21 to the decorative frame 22 to be slidably received. The screw 23 has a length exceeding at least the wall thickness of the decorative frame 22 .

That is, when the cylindrical portion 25 of the rotating frame 24 is inserted from the upper end of the decorative frame 22 and the three fixing springs 21 are fastened and fixed to the outer peripheral surface of the decorative frame 22 , the tips of the screws 23 are attached to the decorative frame 22 . It protrudes from the inner surface and is arranged in a groove 25 a provided in the cylindrical portion 25 of the rotating frame 24 . The screw holes of the decorative frame 22 through which the screws 23 are inserted and the grooves 25a provided in the cylindrical portion 25 of the rotating frame 24 are designed so that the tips of the screws 23 enter the grooves 25a.

Therefore, when the cylindrical portion 25 is inserted into the upper end of the decorative frame 22 and the three fixing springs 21 are attached to the decorative frame 22, the tips of the three screws 23 are inserted into the grooves 25a of the cylindrical portion 25. . In this state, the tips of the three screws 23 can move along the grooves 25a, and the rotating frame 24 can rotate about the rotating shaft P with respect to the decorative frame 22. As shown in FIG. As described above, since the decorative frame 22 is fixed to the ceiling, the rotary frame 24 can be rotated about the rotary shaft P with respect to the decorative frame 22 fixed to the ceiling.

The rotating frame 24 has two substantially quadrangular prism-shaped protruding portions 28, 28 on the upper end side spaced from the decorative frame 22 for tiltably attaching two support plates 60, respectively. The two projecting portions 28 , 28 are provided integrally with the rotating frame 24 at positions spaced apart in the radial direction of the rotating frame 24 . The two protrusions 28 , 28 are provided so as to protrude upward in parallel with the rotation axis P from the illustrated upper end of the rotation frame 24 .

Further, a plate piece 80 is provided on a substantially annular end surface 24a of the rotating frame 24 separated from the decorative frame 22 when the rotating frame 24 is in a state (first state) in which the rotation of the rotating frame 24 with respect to the decorative frame 22 is disabled. An engaging projection 27 is protruded to engage with the plate piece 80 to restrict the movement of the plate piece 80 . As shown in FIG. 1, the engaging projection 27 is provided on the end surface 24a on the side where the gap between the lamp body 40 and the frame body 20 opens when the lamp body 40 is tilted with respect to the frame body 20. . The engaging projection 27 is provided at a position where it sandwiches the plate piece 80 between one projecting portion 28 on the front left side in FIG. regulate. The size and shape of the engaging projection 27 can be set arbitrarily. In addition, only one engagement projection 27 is provided on the end surface 24a of the rotating frame 24, so that when the lamp body 40 is tilted with respect to the frame body 20 as shown in FIG. The opposite end face 24a has no projections.

The plate piece 80 is fixed to the decorative frame 22 in a state where the engaging portion 81 is engaged with the end surface 24 a of the rotating frame 24 . The plate piece 80 functions as a movement prevention member for preventing the rotation frame 24 from coming off in the direction away from the decorative frame 22 . The plate piece 80 also functions as a rotation control member that enables rotation of the rotating frame 24 with respect to the decorative frame 22 and disables rotation of the rotating frame 24 with respect to the decorative frame 22 .

As shown in FIG. 3, the plate piece 80 has a shape obtained by bending a substantially rectangular metal plate into a substantially L shape. The plate piece 80 has an engaging portion 81 (holding portion) and a fixing portion 82 . The engaging portion 81 is engaged with the end surface 24 a of the rotating frame 24 that is spaced apart from the decorative frame 22 . The fixing portion 82 is fastened and fixed to the outer peripheral surface of the decorative frame 22 with screws 84 . When fixing the fixing portion 82 to the decorative frame 22 , the screw 84 is inserted through the insertion hole 83 of the fixing portion 82 and screwed into the screw hole 85 provided on the outer peripheral surface of the decorative frame 22 .

The angle of the engaging portion 81 with respect to the fixed portion 82 is set to an acute angle slightly smaller than a right angle. Therefore, the tip of the engaging portion 81 is pressed against the end surface 24 a of the rotating frame 24 while the fixing portion 82 is fastened and fixed to the outer peripheral surface of the decorative frame 22 . As a result, a force that presses the rotating frame 24 toward the decorative frame 22 acts on the end surface 24 a , and a frictional force acts between the end surface 24 a and the engaging portion 81 .

In the state (second state) shown in FIG. 2 in which the rotating frame 24 can be rotated with respect to the decorative frame 22, when the fixing portion 82 of the plate piece 80 is fixed to the decorative frame 22, the engagement portion of the plate piece 80 is fixed. 81 becomes slidable in the circumferential direction along the end face 24a of the rotating frame 24. As shown in FIG. At this time, the movable range of the engaging portion 81 is defined within the range between the two projecting portions 28, 28 of the rotating frame 24, which is an angular range slightly smaller than 180°. Needless to say, when the plate piece 80 is fixed to the decoration frame 22 in this state, it is possible to prevent the problem that the rotating frame 24 moves away from the decoration frame 22 .

On the other hand, in the state (first state) shown in FIG. is fastened and fixed to the outer peripheral surface of the decorative frame 22 , the rotation of the rotating frame 24 with respect to the decorative frame 22 becomes impossible. That is, the decorative frame 22 and the rotating frame 24 are relatively arranged at the rotational positions shown in FIG. facing between When the plate piece 80 is fastened and fixed to the decorative frame 22 in this state, the engaging portion 81 of the plate piece 80 is engaged between the projecting portion 28 on one side and the engaging projection 27, and the decorative frame 22 of the rotating frame 24 is engaged. It becomes impossible to rotate against Even in this state, the plate piece 80 functions to prevent the rotation frame 24 from moving away from the decoration frame 22 .

Between the decorative frame 22 and the rotating frame 24, as shown in FIG. 2, a substantially truncated cone-shaped cylindrical reflecting plate 26 converging toward one end in the axial direction is arranged. The decorative frame 22 has an annular stepped portion 22b on its inner surface on which a flange portion 26a provided at the widened opening edge of the reflector 26 is placed. That is, by placing the flange portion 26a of the reflecting plate 26 on the step portion 22b of the decorative frame 22 and attaching the rotating frame 24, the reflecting plate 26 is attached while being sandwiched between the decorative frame 22 and the rotating frame 24. .

Also, the two protruding portions 28, 28 of the rotating frame 24 each have a recess 28a on the inner surface side facing each other near the upper end. A washer (not shown) and a lock nut 29b (FIG. 1) are accommodated in the recess 28a. The recess 28a has an inner surface shape that matches the outer shape of the lock nut 29b so that the lock nut 29b does not turn. Further, the recess 28a has a depth such that the lock nut 29b and the tip of a rotating screw 29a, which will be described later, do not protrude inward from the recess 28a. In other words, the length of the rotating screw 29a is set so that the tip thereof does not protrude from the recess 28a. As a result, it is possible to prevent the light emitted from the lighting body 40 from striking the lock nut 29b or the rotating screw 29a, thereby suppressing the occurrence of stray light due to reflection.

The projecting portion 28 also has an insertion hole 28b for inserting a rotation screw 29a (FIGS. 1 and 3) for attaching the support plate 60. As shown in FIG. The through holes 28b provided in the two projecting portions 28 are arranged coaxially. The insertion hole 28b is provided through the projecting portion 28 so as to communicate with the recess 28a. The tilting axis Q is the center of the rotation screw 29a and the insertion hole 28b.

In addition, the projecting portion 28 has a recess 10 in which the illustrated lower end portion of the support plate 60 is accommodated on the outer surface side of the upper end thereof. The above-described insertion hole 28b through which the rotation screw 29a is inserted is provided in the recess 10. As shown in FIG. The recess 10 is provided with a first rotation restricting surface 11 and a second rotation restricting surface 12, which will be described later.

When two support plates 60 are attached to the rotating frame 24, the lower end portions of the support plates 60 are overlapped in the recesses 10 on the outer surface side of the projecting portions 28, and the insertion holes 65 (see FIG. 4) and the insertion hole 28b of the projecting portion 28 are arranged coaxially. Then, the rotating screw 29a is passed through the insertion hole 65 and the insertion hole 28b, and the rotating screw 29a is passed through a washer (not shown) arranged in the recess 28a of the projecting portion 28, and the lock nut 29b is screwed. The lock nut 29b is fixed in the middle of the rotation screw 29a, and the support plate 60 is attached to the projecting portion 28 so as to be rotatable.

The first rotation restricting surface 11 and the second rotation restricting surface 12 in the recess 10 of the projecting portion 28 of the rotating frame 24, and the first contact surface 61 and the second contact surface 61 of the support plate 60. The surface 62 regulates the rotational position of the support plate 60 with respect to the rotational frame 24 about the rotational screw 29a. The first rotation restricting surface 11 and the second rotation restricting surface 12 of the projecting portion 28, and the first contact surface 61 and the second contact surface 62 of the support plate 60 will be described in detail later.

As shown in FIG. 4 , the lamp body 40 has a lens frame 42 , a lens 44 , a pressing spring 45 , a radiator 46 and a light source module 30 . The illustrated upper end of the support plate 60 described above is fixed to the lens frame 42 using screws 66 . The outer peripheral surface of the lens frame 42 is provided with two recesses 43 into which the support plate 60 is fitted. The two recesses 43 are provided facing each other in the radial direction of the lens frame 42 . The recess 43 is formed in the same shape as the outer shape of the support plate 60 to prevent the problem of attaching the support plate 60 upside down. The bottom surfaces of the two recesses 43 are planes parallel to each other.

When attaching the support plate 60 to the recess 43 of the lens frame 42 , the support plate 60 is fitted into the recess 43 with the front and back of the support plate 60 aligned with the shape of the recess 43 , and screws 66 are inserted into the insertion holes 67 of the support plate 60 . It is inserted and screwed into the screw hole 51 of the recess 43 of the lens frame 42 . As a result, the support plate 60 is fastened and fixed to the lens frame 42 in the correct orientation.

As described above, when the lens frame 42 and the rotary frame 24 are connected via the two support plates 60, the lens frame 42 (that is, the lamp body 40) is rotated with respect to the frame body 20 fixed to the ceiling. It becomes rotatable in the horizontal direction around P and can be tilted around the tilting axis Q.

The lens frame 42 includes a substantially cylindrical tubular portion 42a, a curved light shielding wall 42b protruding downward in the figure from the lower end of the tubular portion 42a in the figure, an operation projection 70 provided on the opposite side of the light shielding wall 42b, and It integrally has two projecting plate portions 42c projecting upward in the figure from the upper end in the figure of the tubular portion 42a. The two protruding plate portions 42c are arranged at the same positions as the recesses 43 described above along the circumferential direction of the lens frame 42 . The light shielding wall 42b and the operation protrusion 70 are arranged at positions different from the recess 43 described above by 90° along the circumferential direction of the lens frame 42, respectively.

The light shielding wall 42b is provided on the side where the gap between the lamp body 40 and the frame body 20 opens when the lamp body 40 is tilted with respect to the frame body 20 in the state shown in FIG. function to On the other hand, the operation protrusion 70, which has a narrower width in the circumferential direction than the light shielding wall 42b, is provided on the side where the gap between the lamp body 40 and the frame body 20 is narrowed when the lamp body 40 is tilted in the direction shown in FIG. there is

The light shielding wall 42b is an operation portion that an operator presses by inserting his/her finger from the inside of the decoration frame 22 and the reflector 26 when tilting the lamp 40 to the state shown in FIG. 1 with the frame 20 fixed to the ceiling. function as On the other hand, the operation projection 70 functions as an operation portion that is pressed by the operator when the tilted lamp body 40 as shown in FIG. 1 is arranged coaxially with the frame body 20 . Further, the operation projection 70 serves as a projection for hooking a finger of the operator when rotating the lamp body 40 about the rotation axis P with respect to the frame body 20 in a state where the frame body 20 is fixed to the ceiling. Function. For this reason, the operation protrusion 70 has a circumferential width narrower than that of the light shielding wall 42b so that the finger can be easily hooked thereon.

Further, the tubular portion 42a holds a lens 44 inside thereof. The lens 44 integrally has an annular flange portion 44a on its outer circumference. When attaching the lens 44 to the tubular portion 42a, the lens 44 is inserted from the upper end side of the tubular portion 42a in the figure. Then, the flange portion 44a is placed on an annular stepped portion (not shown) provided on the inner surface of the cylindrical portion 42a. Further, a substantially annular presser spring 45 is inserted into the cylindrical portion 42a from above the flange portion 44a (on the side opposite to the stepped portion), and the presser spring 45 is inserted into a predetermined groove (not shown) of the cylindrical portion 42a. fixed. As a result, the flange portion 44a of the lens 44 is sandwiched between the stepped portion provided on the inner surface of the cylindrical portion 42a and the pressing spring 45, and the lens 44 is fixed within the lens frame 42. As shown in FIG.

In this state, the optical axis of the lens 44 overlaps the optical axis O of the lamp body 40 . The lens 44 has a thickness in the optical axis direction that is slightly larger than the axial length of the cylindrical portion 42a. The lens 44 has a concave lens surface on the light incident side (upper end side in the drawing). The lens 44 has a convex lens surface on the light exit side (lower end side in the drawing).

The projecting plate portion 42c of the lens frame 42 has an insertion hole 53 for inserting a fixing screw 52 for connecting and fixing the radiator 46 to one axial end (upper end in the figure) of the cylindrical portion 42a. The heat radiator 46 has a substantially disc-shaped base plate 46 a that closes one end of the lens frame 42 . Two cutouts 46b for fitting the two projecting plate portions 42c of the lens frame 42 described above are provided on the outer peripheral edge of the base plate 46a. The two cutouts 46b are provided at positions spaced apart in the radial direction of the base plate 46a so as to face the two projecting plate portions 42c of the lens frame 42 .

A plurality of (five in this embodiment) radiation fins 46c are integrally erected on the upper surface of the base plate 46a opposite to the lens frame 42 in the figure. Each radiation fin 46c extends substantially parallel to each other along the optical axis O. As shown in FIG. The radiation fins 46c extend vertically upward from the upper surface of the base plate 46a.

Out of the five heat radiating fins 46c, the outer two heat radiating fins 46c are provided with boss portions 46d on which the two protruding plate portions 42c of the lens frame 42 overlap so as to face the notch 46b. Each boss portion 46d is provided integrally with the outer side of the two corresponding outer radiation fins 46c so as to be continuous with the notch 46b. Each boss portion 46d is provided with a screw hole 46e for screwing a fixing screw 52 inserted through the insertion hole 53 of the projecting plate portion 42c.

When the radiator 46 is fixed to the upper end of the lens frame 42 in the drawing, the two projecting plate portions 42c of the lens frame 42 are fitted into the notches 46b of the base plate 46a of the radiator 46, respectively, and the inside of each projecting plate portion 42c is fitted. The boss portion 46d is superimposed on the . At this time, the lower surface of the base plate 46a of the radiator 46 contacts the upper end of the cylindrical portion 42a of the lens frame 42. As shown in FIG. Then, the fixing screws 52 are inserted through the insertion holes 53 from the outside of the two projecting plate portions 42c, and screwed into the screw holes 46e of the boss portions 46d for fastening. Thereby, the radiator 46 is fixed to one end of the lens frame 42 .

A light source module 30 is attached to the lower surface of the base plate 46a of the radiator 46 in the drawing. The light source module 30 has a light emitting portion 32 (light source) including a plurality of semiconductor light emitting elements (not shown) such as LEDs (light emitting diodes), and has a structure in which the light emitting portion 32 is provided on the surface of a substrate 33 . The light emitting part 32 has a light emitting surface 31 parallel to the ceiling surface, and an axis perpendicular to the light emitting surface 31 passing through the center of the light emitting surface 31 is an optical axis O. The optical axis O of the light emitting section 32 coincides with the optical axis O of the lens 44 . The light emitting unit 32 emits light centered on the optical axis O. As shown in FIG.

Further, the radiator 46 has an accommodating portion (not shown) in which a connector (not shown) for connecting a power supply cable (not shown) pulled out from a power supply device (not shown) is accommodated. This accommodation portion is covered with a cover 47 . The cover 47 has a hole 47a for inserting the power supply cable. The number of radiation fins 46c is not limited to five and can be changed arbitrarily.

The configuration and operation for controlling the tilt angle of the lamp body 40 with respect to the frame body 20 will be described below with reference to FIGS. 5 and 6. FIG. In the following description, one support plate 60 that rotatably connects the frame 20 and the lamp body 40 and its peripheral members will be described as a representative, and the description of the other component will be omitted.

As described above, the lamp body 40 is provided so as to be tiltable with respect to the frame body 20 via the two support plates 60 , 60 . FIG. 5 shows a state in which the lamp body 40 is arranged at a second position where the lamp body 40 is tilted with respect to the frame body 20 fixed to the ceiling, and FIG. 1 shows a state in which the lamp body 40 is arranged at a first position where

When the lamp body 40 is rotated to the second position as shown in FIG. 5, the optical axis O of the lamp body 40 is tilted with respect to the rotation axis P, and the light emitted from the light emitting part 32 is vertically downward. It is irradiated in a direction that is inclined with respect to the beam. On the other hand, when the lamp body 40 is rotated to the first position as shown in FIG. 6, the optical axis O of the lamp body 40 overlaps the rotation axis P, and the light emitted from the light emitting portion 32 is vertically downward. is irradiated.

The projecting portion 28 of the frame 20 that supports the lamp 40 has a first rotation restricting surface 11 , a second rotation restricting surface 12 and a third rotation restricting surface 13 . The first and second rotation restricting surfaces 11 and 12 are provided side by side along the illustrated lower edge of the recess 10 on the outer surface side of the projecting portion 28 . The second rotation restricting surface 12 is a flat surface orthogonal to the rotation axis P of the frame 20, and the first rotation restricting surface 11 is inclined with respect to the second rotation restricting surface 12. It is the surface. Specifically, the first rotation restricting surface 11 is inclined upward in the figure continuously with the end side (the right edge in the figure) of the second rotation restricting surface 12 on the side opposite to the tilting direction of the lamp body 40 . flat surface. The third rotation restricting surface 13 is a flat surface extending downward in the figure in parallel with the rotation axis P continuously from the left edge of the second rotation restricting surface 12 in the figure.

On the other hand, the support plate 60 has a first contact surface 61 that contacts the first rotation restricting surface 11 of the projecting portion 28, a second contact surface 62 that contacts the second rotation restricting surface 12, and a second contact surface 62 that contacts the second rotation restricting surface 12. It has a third abutment surface 63 a that abuts against the third rotation restricting surface 13 . The third contact surface 63a is provided on a reinforcing portion 63 that protrudes from a portion of the support plate 60. As shown in FIG. The first to third contact surfaces 61 , 62 , 63 a are end surfaces of the support plate 60 and surfaces perpendicular to the surface of the support plate 60 . The first and second abutment surfaces 61 and 62 are provided on the edge of the support plate 60 on the side opposite to the lamp body 40 with respect to the turning screw 29a.

The reinforcing portion 63 is a substantially rectangular plate piece that protrudes vertically downward when the support plate 60 is rotated to the posture shown in FIG. A third contact surface 63 a of the reinforcing portion 63 is a surface orthogonal to the second contact surface 62 . The shape of the reinforcement portion 63 is not limited to the illustrated one, and can be changed arbitrarily.

A notch 64 is provided between the first and second contact surfaces 61 and 62 . The notch 64 is provided so that the support plate 60 does not interfere with the first rotation restricting surface 11 and/or the second rotation restricting surface 12 of the projecting portion 28 when the support plate 60 is rotated. there is If the notch 64 were not provided, the imaginary line where the first contact surface 61 and the second contact surface 62 intersect would be shifted from the center line passing through the insertion hole 65 of the support plate 60. placed in position.

For example, when the lamp body 40 is rotated clockwise from the second position shown in FIG. 5 toward the first position shown in FIG. 6, the first contact surface 61 of the support plate 60 rotates. It abuts against the first rotation restricting surface 11 of the projecting portion 28 of the frame 24 and restricts further rotation of the lamp body 40 . The angle of the first contact surface 61 of the support plate 60 is such that the optical axis O of the lamp body 40 is aligned with the frame body 20 when the first contact surface 61 is in contact with the first rotation restricting surface 11 . is formed at an angle parallel to the rotation axis P of the .

On the other hand, when the lamp body 40 is rotated counterclockwise in the drawing from the first position shown in FIG. 6 toward the second position shown in FIG. It abuts on the second rotation restricting surface 12 of the projecting portion 28 of the moving frame 24 to restrict further rotation of the lamp body 40 . The angle of the second contact surface 62 of the support plate 60 is such that the optical axis O of the lamp body 40 is aligned with the frame body 20 when the second contact surface 62 is in contact with the second rotation restricting surface 12 . is formed at an angle inclined with respect to the rotation axis P of .

In other words, the angle formed by the first contact surface 61 and the second contact surface 62 of the support plate 60 is the same as the angle formed by the first rotation restricting surface 11 and the second rotation restricting surface 12 of the projecting portion 28. The angle is made smaller by the tilt angle of the lamp body 40 . In other words, when the angles of the first and second rotation restricting surfaces 11 and 12 of the projecting portion 28 are fixed, the angle between the first contact surface 61 and the second contact surface 62 of the support plate 60 is can arbitrarily change the tilt angle of the lamp body 40 with respect to the frame body 20 by adjusting .

5, the third contact surface 63a of the reinforcing portion 63 protruding from near the lower end of the supporting plate 60 in the drawing is positioned at the third turning position of the protruding portion 28. It abuts on the movement restricting surface 13 . 6 in which the lamp body 40 is arranged coaxially with the frame body 20, the load acting between the first abutment surface 61 and the first rotation restricting surface 11 is increased. 5, the load acting between the second contact surface 62 and the second rotation restricting surface 12 becomes larger. Therefore, a reinforcing portion 63 is provided to receive the load when the lamp body 40 is tilted to the second position shown in FIG.

Further, in order to support a stronger load with the lamp body 40 arranged at the second rotation position, the area of the second contact surface 62 of the support plate 60 is made larger than the area of the first contact surface 61. I made it big. In this embodiment, since the support plate 60 is made of a single metal plate, the length of the second contact surface 62 in the direction perpendicular to the tilting axis Q is set to be perpendicular to the tilting axis Q of the first contact surface 61 . longer than the length in the direction to

As described above, according to this embodiment, by changing the mounting state of the plate piece 80 to the decorative frame 22, the lighting device 100 can be used as a fixed downlight and also as a universal downlight. can. In this case, only the plate piece 80 is required, and only one screw hole 85 is provided in the decorative frame 22 . The plate piece 80 also serves as a movement prevention member that restricts movement of the rotating frame 24 in a direction away from the decoration frame 22 . Therefore, according to this embodiment, the direction of the lamp body 40 can be fixed and released with a simple and inexpensive configuration.

Further, according to the present embodiment, when the lamp body 40 is set in a state in which it can be tilted with respect to the frame body 20 (the state shown in FIG. 1) and used as a universal downlight, the tilting of the lamp body 40 causes the frame body 20 to interfere. The engagement protrusions 27 are positioned so that the plate pieces 80 are provided on the side where the gap between them is narrowed. In other words, the engagement protrusion 27 is provided on the end face 24a of the rotating frame 24 on the side where the clearance between the lamp body 40 and the frame body 20 is widened by tilting the lamp body 40 . As a result, when used as a universal downlight, it is possible to prevent the plate piece 80 from being arranged on the side where the optical axis O is inclined and the illumination light is inclined, and the light is reflected by the plate piece 80 to cause glare. can be prevented.

Further, according to this embodiment, when the lamp body 40 is tilted to the state shown in FIG. A light shielding wall 42b is provided on the open side. On the other hand, in this embodiment, the operation protrusion 70 is provided on the side opposite to the light shielding wall 42b, that is, on the side where the gap between the lamp body 40 and the frame body 20 is narrowed when the lamp body 40 is tilted. As a projection for hooking the operator's finger to rotate the lamp 40 with respect to the frame 20, for example, a method of protruding the tip of the rotation screw 29a inside the projecting portion 28 of the lens frame 42 is also conceivable. However, when a projection is provided on the irradiation path of the illumination light, it is conceivable that the light may be reflected by the projection and cause stray light. Therefore, in this embodiment, the operation protrusion 70 extending in the optical axis O direction is provided on the lens frame 42 .

Although the embodiments of the present invention have been described above, the above-described embodiments are presented as examples and are not intended to limit the scope of the invention. The above-described embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. The embodiments described above are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.
The invention described in the scope of claims at the time of filing of the present application will be additionally described below.
[1]
a fixing member fixed to the attached portion;
a rotating member provided to be rotatable about the rotating shaft with respect to the fixed member;
a lighting body having a light source that emits light in the optical axis direction;
The lamp body is tilted with respect to the rotating member between a first position in which the optical axis is parallel to the rotating shaft and a second position in which the optical axis is tilted with respect to the rotating shaft. a supporting mechanism capable of supporting;
A first state in which a part of the rotating member abuts to prevent the rotating member from rotating with respect to the fixed member, or a second state in which the rotating member can rotate with respect to the fixed member. a rotation control member fixed to the fixing member in a state;
lighting device.
[2]
The rotation control member has a fixing portion that is fixed to the fixed member and a holding portion that presses an end surface of the rotating member opposite to the fixing member along the rotation shaft of the rotating member. A movement prevention member that prevents movement in a direction away from the fixing member,
The illumination device of [1].
[3]
The rotation control member, when in the first state, is fixed to the fixing member on the side opposite to the direction in which the lamp is tilted from the first position to the second position, and is in the second state. is fixed to the fixing member on the tilting side of the lamp body,
The lighting device of [1] or [2].
[4]
The lamp body has a light shielding wall at an end facing the rotating member opposite to the direction in which the lamp body is tilted from the first position to the second position, and tilts the lamp body. a projection on which a finger is hooked in order to rotate the rotating member with respect to the fixed member,
The illumination device of [1].

DESCRIPTION OF SYMBOLS 10... Recess 11... 1st rotation control surface 12... 2nd rotation control surface 20... Frame body 21... Fixed spring 22... Decorative frame 24... Rotating frame 26... Reflector , 27... Engagement projection 28... Protruding portion 29a... Rotating screw 30... Light source module 31... Light emitting surface 32... Light emitting part 40... Lamp body 60... Support plate 61... First contact Surface 62 Second contact surface 70 Operation projection 80 Plate piece 81 Engagement portion 82 Fixing portion 100 Lighting device O Optical axis P Rotation shaft Q tilt axis.

Claims (3)

a fixing member fixed to the attached portion;
a rotating member provided to be rotatable about the rotating shaft with respect to the fixed member;
a lighting body having a light source that emits light in the optical axis direction;
The lamp body is tilted with respect to the rotating member between a first position in which the optical axis is parallel to the rotating shaft and a second position in which the optical axis is tilted with respect to the rotating shaft. a supporting mechanism capable of supporting;
When the rotation of the rotating member with respect to the fixed member is disabled, the rotation member is fixed to the fixed member in a first state in which the rotating member is in contact with a part of the rotating member. a rotation control member that is fixed to the fixing member in a second state different from the first state when allowing rotation ;
In the first state, the rotation control member is arranged on the side where a gap between itself and the rotation member opens when the lamp body is tilted from the first position to the second position. fixed to a fixed member, and fixed to the fixed member on the side where the gap between the lamp body and the rotating member is narrowed when the lamp body is tilted in the second state;
lighting device. The rotation control member has a fixing portion that is fixed to the fixed member and a holding portion that presses an end surface of the rotating member opposite to the fixing member along the rotation shaft of the rotating member. A movement prevention member that prevents movement in a direction away from the fixing member,
3. The lighting device of claim 1. a fixing member fixed to the attached portion;
a rotating member provided to be rotatable about the rotating shaft with respect to the fixed member;
a lighting body having a light source that emits light in the optical axis direction;
The lamp body is tilted with respect to the rotating member between a first position in which the optical axis is parallel to the rotating shaft and a second position in which the optical axis is tilted with respect to the rotating shaft. a supporting mechanism capable of supporting;
When the rotation of the rotating member with respect to the fixed member is disabled, the rotation member is fixed to the fixed member in a first state in which the rotating member is in contact with a part of the rotating member. a rotation control member that is fixed to the fixing member in a second state different from the first state when allowing rotation ;
The lamp body has a light shielding wall at an end facing the rotating member opposite to the direction in which the lamp body is tilted from the first position to the second position, and tilts the lamp body. a projection on which a finger is hooked in order to rotate the rotating member with respect to the fixed member,
lighting device.

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